Pressure relieving device for vessels



- t. MALY. PRESSURE RELIEVING DEVICE FOR VESSELS.

. APPLICATION FILED SEPT. I0. 1911. 1,320,020. Patented Oct. 28,1919.

3 SHEETS-SHEET 3.

INVENTCR ATTORNEY UNITED STATES JOSEPH MALY, OF NEW- YORK, N. Y.

PRESSURE-RELIEVING DEVICE FOR VESSELS.

T 0 all whom it may concern:

Be it known that I, JOSEPH MALY, a subject of the Emperor of Austria, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in a Pressure-Relieving Device for Vessels, of which the following is a specification.

This invention relates to pressure relieving devices for vessels, aiming primarily to provide means whereby the head-on resistance present in moving ships will be relieved, so that the speed of the ship will be greatly increased without necessitating an increase in the driving power of the propelling machinery.

A further object of the invention is to provide a device of the character set forth which is adapted particularly to be used upon the bow of the vessel, and which operates in such manner as to buoy the forward end of the vessel.

A. still further object of the invention is to provide a device of the character set forth which shall be of extremely simple and inexpensive construction, which is capable of being readily applied to or removed from the vessel, which has its various movable parts so constructed and arranged as to minimize the opportunity for wear or breakage, and'which will prove thoroughly efiieient in practice.

With these objects in view together with others which will appear as the description proceeds, the invention resides in the novel formation, combination and arrangement of parts, all as will be described more fully hereinafter, illustrated in the drawings and particularly pointed out in the claim.

In the drawings:

Figure 1 is a top plan view of the bow of a conventional form of vessel, and illustrating the application of a pressure reducing mechanism constructed in accordance with the invention,

Fig. 2 is a bottom plan view of the vessel with the pressure relieving apparatus applied thereto,

Fig. 3 is a vertical sectional view taken substantially upon line 33' of Fig. 1, and

Fig. 4 is a transverse sectional view taken through one of the drums or rollers employed in carrying out the invention.

Referring now particularly to the draw- Specification of Letters IPatent.

Patented Oct. 28, 1919.

Application filed September 10, 1917. Serial No. 190,614.

ings, 5 represents generally the bow of the vessel, to which the improved pressure relieving apparatus is applied.

In carrying out the invention, the frame formed of metal or any other preferred material is applied to the bow of. the said vessel and extends forwardly therefrom, the frame being indicated generally at 6, and provides a pair of rearwardly' and outwardly divergent wings 7. These wings lie close upon the sides of the vessel, and may be secured thereto by bolts or any other preferred fastening means. As shown particularly in Fig. 3 of the drawings, it will be observed that'the wings contact with the side plates of the vessel, and are firmly carried thereby. It will be further observed that the frame extends downwardly from a point above the waterline of the vessel to the keel of the latter, and the said wings in conforming to the inclination of the vessel sides extend upwardly and outwardly from the said keel. The frame thus constructed is of substantially V or wedge shape, and is provided in its outer surfaces with a plurality of compartments or recesses 8, the latter extending throughout the depth of the frame and being substantially circular in cross section. The recesses decrease in diameter toward the forward end or apex of the frame, and rotatably arranged within each of the recesses-is a roller or drum 9. These rollers fit snugly within their respective recesses, but are capable of freely rotating therein. It will be observed that the recesses are so arranged in the frame that only a portion of the roller housed thereby will be exposed beyond the sides of the frame, and the greater portion of each roller will be wholly inclosed. The rollers are rotatably supported within their respective recesses by arms 10 and 11 which project outwardly from the frames upon the bottom and top, respectively, thereof.

The cylinders shown in the present illustration are hollow, and are provided in their peripheries with longitudinally disposed grooves or depressions 12, the ribs 13 which separate the said grooves constituting fins against which the water engages, and it will be understood that the pressure of water against these fins when the vessel is advancing will cause the drums to rotate. It is also preferred that the drums be made water-tight so as to render the pressure reducing apparatus self-supporting in the water, and to assist in buoying up the forward end of the vessel.

The frame thus constructed is applied to the vessel at the bow thereof, and the apex of the said frame projects beyond the bow. By reason of the fact that the sides of the wings constituting the wedged member incline or diverge upwardly and outwardly, the rollers arranged within the recesses upon the frame will be correspondingly inclined, and the rollers will obtain a relatively great amount of purchase upon the water. Only the outwardly protruding webs or ribs upon the surfaces of the rollers projecting beyond the outer faces of the wing members will engage directly with the water, and therefore as the vessel advances, these rollers will rotate. This rotary move ment of the rollers reduces the friction of the vessel with the water as the vessel advances, thereby increasing the efliciency of the motive power for the vessel.

While the present disclosure is what is believed to be the preferred embodiment of the invention, it is to be understood that the invention is not limited thereto, but that various changes in the minor details of construction, proportion, and arrangement of parts may be resorted to if desired without departing from the spirit of the invention as defined by the appended claim.

What is claimed is:

A frame, substantially wedge shaped, fitted upon the bow of the vessel and projecting forwardly therefrom, the opposite sides of the frame being in contact with the sides of the vessel and forming rearwardly diverging wings secured to the vessel, the outer surfaces of each wing and the forwardly projecting portion of the "frame being provided with a plurality of compartments substantially circular in cross section and extending throughout the depth of the frame, each series of compartments being decreased in diameter toward the forward end of the frame, a roller fitted in each recess and each roller being of a diameter substantially equal to the diameter of its recess, each of the said recesses having an open portion, whereby a portion of each roller will be exposed beyond the sides of the frame while the greater portion of each roller will be wholly inclosed within its compartment, means for supporting the rollers in position in their compartments, and fins formed on the said rollers.

In testimony whereof I aflix my signature in presence of two witnesses.

JOSEPH MALY.

Witnesses:

WILLIAM S. FOWLER, J OHN E. BURCH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

